It is not the trend that the file data of the structuring increase that enterprises must keep up with. Though the network attaches to and stores NAS Store the machine format best choice, but economy it expands schemes of NAS to be limited effectively under the condition of keeping employing the characteristic not to reduce.
The more terrible one is, a lot of enterprise storage equipments are used for storing not enlivening the data at present. So, the manufacturer have introduced and stored and stratified the solution and offered for each level and optimized the media type. But storing hierarchically will increase the time of lagging behind, but the question that users care about most can not reduce the characteristic or increase the time of lagging behind.
How is long lag time acceptable? The answer to this question varies with each individual. To visual result and computer cartography, the lag time of 0.2 milliseconds can be accepted, on the application of database, the lag time within 1 millisecond is perfect. On the other hand, if users just use some routine utility programs, so acceptable lagging time frame can be a little bigger.
It is slightly insufficient to stratify the manifestation of the memory technology in filing and employing lag time. Until popular the intersection of file and the intersection of service standard and detection program go on, measure most, integration it stores technical most significant ends to be 0.4 milliseconds in shortest lag time of the apparatus in NAS hierarchically at present. This absolutely displays the preferably solution in the advanced NAS solution measured at present. Because the standard has measured and increased the customer end to support, lag time rises to 0.8 milliseconds.
It means any?
This question and stratifying different medias used in the storage equipment to have few relations, but have a very great relation with the basic architecture. Any NAS apparatus is all a server composed of processor, memory and I/O in fact. The place where NAS apparatus is different from the common file server is that it has adopted and customized the filing system and attached a lot of application software used for protecting or optimizing the data storage.
Store the architecture and usually adopt and troop the filing system hierarchically, has joined a lot of nodes, can carry on load balancing, the all right Mobile Data between NVRAM and magnetic disc between every node, deposit RAID control device, manage filing system metadata and carrying out the application software of data protection,etc.. The problem is, NAS control device needs to carry out a lot of tasks of taking up system bandwidth. Its most important function is to store, search and protect the subscriber data in order, but not offer high performance.
The problem is, is it perfect and balanced how enterprises reach in these two respects of extendible capacity and extendible characteristic?
Tags: processor memory, memory technology, detection program, terrible one, best choice, enterprise storage